JPH03212535A - Column beam joint - Google Patents

Abstract

PURPOSE:To enable the bonding with high dimensional accuracy by constituting a panel zone body interposed between the mutual joint parts of pillars by joint metallic materials and an outer circumferential plate for connecting the upper and lower joint metallic materials to each other, and forming through holes in the joint metallic materials. CONSTITUTION:A pillar 1 is formed into a rectangular sectional form by filling concrete 4 in a square steel pipe 5. A panel zone 7 to bond the end part of a beam 2 with the pillar 1 is formed in a joint part 6 between the upper and lower pillars 1, 1. Then, a panel zone body 3 is provided in the joint part 6 of the pillar 1, and the outer circumferential part 14 lower surface of a joint metallic material 12 is integrally welded and bonded to the steep pipe 5 upper end. Further, the end parts of upper and lower flanges 9, 10 are butted and welded to the side surfaces of the joint metallic materials 11, 12, and the end part of the web 8 of the beam 2 is welded to an outer circumferential plate 13 to rigidly bond the beam to the pillar 1. The pillar 1 is stood on a pillar 1a, and the concrete 4 is integrally placed in the panel zone body 3 and the steel pipe 5 to construct the whole of the pillars 1, 1a 1 as an integrated rigid body.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a column-beam joint that joins a steel pipe concrete column and a steel beam.

``Prior Art'' Conventionally, as column-beam connecting members for joining columns and beams to each other at their intersections (panel zones), for example, column-beam connecting members as shown in FIGS. 7 and 8 have been known. (Refer to Japanese Patent Application Laid-Open No. 19008/1999).

This column-beam joint member 30 has concrete press-fitted inside.
Connection part of filled square steel pipe column 31 (panel zone)
A diaphragm 33 made of forged or cast material is interposed between a diaphragm 32 and a through hole 34 for passing the concrete C through the center and four corners of the diaphragm 33, and an edge 35 and a backing material 36 are provided on the side of the diaphragm 33. Protruding,
By integrally welding the ends of the beams 37 to the edges 35 and the backing material 36, the steel pipe column 31 and the beams 37 are joined to each other at their connecting portions 32.

“Problems to be Solved by the Invention” However, in the conventional column-beam connecting member 30, the beam 3
The structure is such that the upper and lower ends of the beam in the beam direction of 7 are welded to separate flat and thin diaphragms 33 for the upper and lower sides to connect them. It was necessary to install it. It is also necessary to directly weld the beam 37 to the column-beam joint member 30 to ensure the rigidity of the joint.

This invention was made in view of the above circumstances, and while ensuring sufficient concrete filling efficiency for the joints between steel pipe concrete columns and steel beams, it has excellent dimensional accuracy and workability at the joints between the two. The purpose of the present invention is to provide a column-beam joint that also has excellent rigidity at the joint.

``Means for Solving the Problems'' This invention provides a method for interposing a panel zone body, which is a column-beam joint, at the joint between columns made of steel pipe concrete, and connecting this panel zone body to a steel beam to be connected to the column. The joining hardware placed at the upper and lower flange positions, and the upper and lower joining hardware,
The beam is a rigid body consisting of outer circumferential plates connected to each other surrounding the outer periphery of the columns, and the beam has its upper and lower flanges connected to the upper and lower joining hardware, respectively, and the center or four corners of the joining hardware is made of concrete or reinforcing steel. It has a through hole for use.

Note that it is desirable to provide a protrusion on the outer surface of one or both of the upper and lower joining metal fittings, on which the end of the flange of the beam rests.

Further, it is desirable that a protruding portion protruding in the axial direction of the column be formed continuously in the circumferential direction on a side portion of the joining metal fitting corresponding to the column outer peripheral portion.

Furthermore, it is desirable to provide a welding groove for the outer circumferential plate on the outer surface of the protrusion.

"Operation" The column-beam joint of the present invention is achieved by interposing a rigid panel zone body consisting of upper and lower joining hardware and a peripheral plate surrounding the column part between them at the joint of steel pipe concrete columns. , it is possible to ensure a high-precision spacing that complies with the cutting method for the upper and lower joining metal fittings. In addition, a through hole of sufficient size for concrete or reinforcing bars can be secured, and the filling property of the joint with concrete is improved.

Furthermore, since the upper and lower flanges at the ends of the steel beams are joined to the side surfaces of each joining hardware, the joining performance is excellent.

Then, by providing a protrusion on the outer surface of the metal joint,
The position of the beam is set, and the protrusion serves as a backing metal, making it easy to obtain a sound welded joint.

Well, since the steel pipes between the columns are integrally connected by the panel zone body, the rigidity of the column as a whole is ensured.

"Embodiment" Figure 1 shows the first embodiment of the present invention. In this figure, reference numeral 1 indicates a column made of steel pipe concrete, reference numeral 2 indicates a beam made of steel frame, and reference numeral 3 indicates a panel zone body. ing.

The pillar 1 has a rectangular cross section made by filling a square steel pipe 5 with concrete 4, and the end of the beam 2 is connected to the pillar 1 at the joint 6 between the upper and lower pillars 1.1. Panel zones (intersections) 7 to be joined are formed. Also, the beam 2 has a cross section l
It is made of a shaped steel frame, and flanges 9 and 10 are formed at the upper and lower ends of the web 8. Note that reinforcing reinforcing bars may be provided inside the steel pipe 5 together with the concrete 4.

The panel zone 7 is provided with the panel zone body 3, which is a feature of the present invention. This panel zone body 3
The metal fittings 11 and 12 are respectively placed at the height of the upper and lower flanges 9.1° of the casing 2, and the metal fittings 11 and 1 are
It is a rigid body composed of an outer circumferential plate 13 that connects the two together by welding so as to surround the outer periphery of the column 1a.

A protrusion 17 is provided on the outer surface of the joining hardware 11.12, and the flange 9.10 of the beam 2 is received by this protrusion 17. In this embodiment, the protrusion 1
7 is provided on both the upper and lower joining hardware 11 and 12, but may be provided only on either the upper joining hardware 11 or the lower joining hardware 12.

The specific shape of the joining hardware 11 is as shown in FIG. 5 or FIG. 6, respectively. That is, it is a diaphragm whose overall shape is rectangular in plan view that substantially matches the cross-sectional shape of the column 1, and includes an outer peripheral part 14 that welds and joins the upper flange 9 of the beam 2, and a rib part that connects the outer peripheral part 14 to each other inside. 15. In addition, the inside excluding the rib portion 15 is a tremie pipe (not shown) for pouring concrete for column 1.
This is a through hole 16 that can be passed through. That is, through-holes 16 are formed at the center and four corners of the joining hardware 11. Further, slightly below the center of each side surface of the outer periphery M14, protrusions 17 on which the ends of the upper seven rungs 9 of the beams 2 rest are provided to protrude forward. In addition, the code 18 is
Air vent holes penetrated in the thickness direction of the joint metal fitting 11 are shown.

The entire joint metal fitting 11 is integrally formed by casting or forging. Further, the shape and structure of one metal fitting 12 are similar to those of the metal fitting 11, but the protrusion 17 may not be provided as described above.

As described above, the outer peripheral plate 13 surrounds the column 1a and connects the upper and lower joint metal fittings 11 and 12, but in more detail, it surrounds the outer periphery of the column 1m and connects the joint metal fittings 11 and 1.
It is connected to each outer peripheral portion 14 of No. 2 by welding.

Such a panel zone body 3 is joined to the beam 2 in the following manner.

First, the panel zone body 3 is installed at the upper end joint part 6 of the existing column 1, and the lower surface of the outer peripheral part 14 of the joining hardware 12 is integrally welded to the upper end of the steel pipe 5. This rigidly connects the panel zone body 3 to the column 1. Then, the ends of the upper and lower flanges 9.10 of the beam 2 are placed on each of the protrusions 17 of the upper and lower joints 11 and 12, and the ends of the upper and lower flanges 9.10 butt against the sides of the joints 11 and 12. be welded. Furthermore, the ends of the webs 8 of the beams 2 are welded to the outer peripheral plate 13. Thereby, the beam 2 is rigidly connected to the column 1 via the panel zone body 3. Note that the protrusion 17 may not be provided on either of the joining hardware 11 or 12. Alternatively, there is a method in which a gusset plate (not shown) is welded and attached to the outer peripheral plate 13 and the web 8 of the beam 2 is bolted to the gusset plate.

Then, a column 1 made of steel pipe concrete is erected on top of the column 11. In this case, the lower end of the steel pipe 5 is welded to the upper surface of the outer circumferential portion 14 of the joining hardware 11 of the panel zone body 3, thereby rigidly joining the steel pipe 5 to the panel zone body 3. Concrete 4 is cast integrally inside the panel zone body 3 and the steel pipe 5, and the entire column IX 11, 1 is constructed as an integral rigid body.

According to this embodiment, since the steel pipes 5.5 of the columns 1 and 1 are integrally connected by the outer peripheral plate 13 of the panel zone body 3, the column 1 as a whole is It is possible to ensure the uniform rigidity of the As a result, column 1
And the rigidity at the joint between the beams 2 is further improved.

FIG. 2 shows a second embodiment of the invention.

In this embodiment, in the panel zone body 3 according to the first embodiment, a protrusion 20 that protrudes in the axial direction of the column 1 is provided on the side (outer periphery 14) corresponding to the outer periphery of the column 1 of the joining hardware 11.
are formed continuously in the circumferential direction.

That is, protrusions 20 are provided on the upper and lower surfaces of both opposing sides of the outer circumferential portion 14 so as to correspond flush with the outer circumferential surface of the column 1 . This protrusion 20 makes it possible to further improve the integrity of the column 1 with the steel pipe 5, and to prevent the column 1 from being subjected to horizontal shearing force acting on the column 1 or bending moment acting around the panel zone body 3. This has the effect of improving the proof strength of the end portion.

The protrusions 20 may be provided on both opposing sides of the outer circumferential portion 14, or may be provided only on one side. Furthermore, if it is desired to further increase the proof strength of the joint end of the column 1, the protrusions 20 may be provided over the entire circumference. Good too. Optional depending on design and construction.

3 and 4 show a third embodiment of the invention. This embodiment is based on the panel zone body 3 in the second embodiment.
, the outer peripheral plate 1 is attached to the outer surface of the protrusion 20 of the joint metal fitting 11.
A welding groove 21 for 3 welding is provided.

That is, as shown in FIG. 3, a V-groove-shaped welding groove 21 that continues in the circumferential direction is provided at the outer surface tip of each of the mutually opposing protrusions 20 and 20 of the joining metal fittings 11 and 12. . Therefore, these welding grooves 21 are used to weld the upper and lower inner surfaces of the outer circumferential plate 13, which closely surrounds the outer periphery of the column 1, to the joining hardware 11.12.

According to this embodiment, the joining hardware 11.12 and the outer peripheral plate 13
Since the welding is reliably performed, the panel zone body 3 can have a more rigid structure, and the rigidity of the panel zone 7 can be improved.

Incidentally, as shown in FIG. 4, the shape of each outer circumferential portion 14 of the joining hardware 11, 12 may be made flush with the outer surface of the outer circumferential plate 13, which has the advantage that welding of the beam 2 is facilitated.

"Effects of the Invention" As explained in detail above, the column-beam joint according to the present invention includes a panel zone body, which is a column-beam joint, interposed at the joint between columns made of steel pipe concrete. ,
High dimensional accuracy is achieved because it is a rigid body consisting of joint hardware placed at the upper and lower flanges of the beam to be joined to the column, and an outer peripheral plate that connects the upper and lower joint hardware to each other in a manner that surrounds the outer periphery of the column between them. This ensures that the joints are obtained. In addition, a through hole of sufficient size for concrete filling can be secured in the center or four corners of the joining metal fittings, and concrete filling efficiency can be improved.

Furthermore, since the beam has its upper and lower flanges connected to the upper and lower joining metal fittings, and a protrusion is provided at the joint, the connection between the column and the beam is easy and reliable. Excellent bondability.

Moreover, since the steel pipes between the columns are integrally connected by the panel zone body, sufficient rigidity between the columns can be ensured, which improves the mutual rigidity of the columns and beams, resulting in an excellent structure. It produces the effect that can be achieved.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view of a beam-column joint showing a first embodiment of the invention, FIG. 2 is a cross-sectional view of a beam-column joint showing a second embodiment of the invention, and FIGS. 3 and 4 are This shows a third embodiment of the present invention, and FIGS. 5 and 6 are respectively a sectional view of a column-beam joint, a perspective view showing the specific shape of the joint metal fittings, and FIGS. 7 and 8. This shows a conventional example of the invention, and the seventh
The figure is a longitudinal cross-sectional view of the beam-column joint member, and FIG. 8 is a horizontal cross-sectional view of the beam-column joint. l...Column, 2...Beam, 3...
Panel zone body, 4... Concrete, 5...7...
...Panel zone, Steel pipe, 9, 1O...Futon, 11.12-...Joint hardware, 13...Outer peripheral plate, 14...16... ...Through hole, 17...20...Protrusion, 21...Outer periphery (side part), protrusion, welding groove.

Claims (4)

[Claims] (1) A panel zone body, which is a column-beam joint, is interposed at the joint between steel pipe concrete columns, and this panel zone body is a joint placed at the upper and lower flange positions of the steel beam to be connected to the column. The beam is a rigid body composed of a metal fitting and an outer circumferential plate that connects the upper and lower joining fittings to each other in a manner surrounding the outer periphery of the column between them, and the beam has its upper and lower flanges joined to the upper and lower joining fittings, respectively, A column-beam joint, characterized in that a through hole is formed in the center or four corners of the joint metal fitting. (2) The beam-to-column joint according to claim 1, wherein a protrusion on which the end of the flange of the beam rests is provided on the outer surface of one or both of the upper and lower joint metal fittings. (3) A protruding portion that protrudes in the axial direction of the column is formed continuously in the circumferential direction on a side portion of the joining metal fitting corresponding to the outer peripheral portion of the column. Column beam joint. (4) The column-beam joint according to claim 3, wherein the outer surface of the protruding portion is provided with a welding groove for an outer peripheral plate.